Buffered 2:1 TMDS Switch with Equalization Data Sheet AD8194 FEATURES FUNCTIONAL BLOCK DIAGRAM AVCC AVEE 2 inputs, 1 output HDMI/DVI high speed signal switch Pin-to-pin compatible with the AD8193 CONTROL AD8194 S SEL LOGIC Enables HDMI 1.3-compliant receiver VTTI 4 TMDS channels per input/output Supports 250 Mbps to 2.25 Gbps data rates Supports 25 MHz to 225 MHz pixel clocks VTTO +4 IP A 3:0 Fully buffered unidirectional inputs/outputs 4 IN A 3:0 + 4 Equalized inputs for operation with long HDMI cables OP 3:0 SWITCH Tx 4 EQ CORE ON 3:0 (20 m at 2.25 Gbps) + 4 IP B 3:0 Matched 50 input and output on-chip terminations 4 IN B 3:0 Low added jitter HIGH SPEED BUFFERED Single-supply operation (3.3 V) Standards compliant: HDMI receiver, DVI VTTI 32-lead, 5 mm 5 mm, RoHS-compliant LFCSP Figure 1. APPLICATIONS TYPICAL APPLICATION Advanced television (HDTV) sets HDTV SET Multiple input displays HDMI Projectors RECEIVER A/V receivers SET-TOP BOX DVD PLAYER AD8194 Set-top boxes Figure 2. Typical AD8194 Application for HDTV Sets GENERAL DESCRIPTION PRODUCT HIGHLIGHTS The AD8194 is a low cost quad 2:1 TMDS switch for high 1. Data supports rates up to 2.25 Gbps, enabling greater than speed HDMI/DVI video applications. The AD8194 features 1080p deep color (12-bit color) HDMI formats and greater equalized inputs, ideal for systems with long cable runs. Its than UXGA (1600 2300) DVI resolutions. primary function is to switch the high speed signals from one 2. Fully buffered inputs and outputs. of two single-link (HDMI or DVI) sources to the single-link 3. Input cable equalizer enables use of long cables at the output. The AD8194 is a fully buffered switch solution with 50 input. For a typical 24 AWG cable, the AD8194 compen- input and output terminations, providing full-swing output sates for more than 20 m at data rates up to 2.25 Gbps. signal recovery and minimizing reflections for improved system 4. Matched 50 on-chip input and output terminations signal integrity. improve system signal integrity. 5. Single-pin source select bit. The AD8194 is provided in a space-saving, 32-lead, LFCSP, 6. Low added jitter. surface-mount, RoHS-compliant, plastic package and is specified to operate over the 40C to +85C temperature range. Rev. A Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20072017 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 07004-001 07004-002AD8194 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Typical Performance Characteristics ..............................................6 Applications ....................................................................................... 1 Theory of Operation .........................................................................9 Functional Block Diagram .............................................................. 1 Introduction ...................................................................................9 Typical Application........................................................................... 1 Input Channels ..............................................................................9 General Description ......................................................................... 1 Output Channels ...........................................................................9 Product Highlights ........................................................................... 1 Switching Mode .......................................................................... 10 Revision History ............................................................................... 2 Application Notes ........................................................................... 11 Specifications ..................................................................................... 3 Switching High Speed Signals................................................... 11 Absolute Maximum Ratings ............................................................ 4 Switching Low Speed Signals .................................................... 11 Thermal Resistance ...................................................................... 4 PCB Layout Guidelines.............................................................. 11 Maximum Power Dissipation ..................................................... 4 Outline Dimensions ....................................................................... 16 ESD Caution .................................................................................. 4 Ordering Guide .......................................................................... 16 Pin Configuration and Function Descriptions ............................. 5 REVISION HISTORY 10/2017Rev. 0 to Rev. A Changed CP-32-8 to CP-32-21 .................................... Throughout Changes to Figure 3 .......................................................................... 5 Updated Outline Dimensions ....................................................... 16 Changes to Ordering Guide .......................................................... 16 11/2007Revision 0: Initial Version Rev. A Page 2 of 16